Table 2. Comparison of Hospital Outcome of Congestive Heart Failure Patients With and Without Hyponatremia (N=189) .
NYHA: New York Heart Association; SD: Standard deviation
| Hospital Outcome | Serum sodium ≥135 mmol/L | Serum sodium <135 mmol/L | Odds Ratio | Confidence Interval | P value |
| At the time of discharge, n (%) | |||||
| Alive | 130 (99.2%) | 51 (87.9%) | 17.84 | 2.14, 148.68 | 0.000 |
| Dead | 1 (0.8%) | 7 (12.1%) | |||
| Duration of hospital stay in days, mean ± SD | |||||
| 9 ± 3 | 11 ± 5 | --- | --- | 0.000 | |
| NYHA class at the time of discharge, n (%) | |||||
| Class I-II | 108 (82.4%) | 31 (53.5%) | 4.09 | 2.06, 8.11 | 0.000 |
| Class III-IV | 23 (17.6%) | 27 (46.5%) | |||
| Blood pressure at the time of discharge in mmHg, mean ± SD | |||||
| Systolic | 121 ± 8 | 111 ± 10 | --- | --- | <0.000 |
| Diastolic | 77 ± 5 | 68 ± 8 | --- | --- | <0.000 |